Loading and Exploring Your Data

GVPT399F: Power, Politics, and Data

Data visualisation

We will use data visualization to answer the following question:

Do cars with big engines use more fuel than cars with small engines?

Load relevant packages

# Load relevant packages
library(tidyverse)

Load in relevant data

# Load the data
mpg
manufacturer model displ year cyl
audi a4 1.8 1999 4
audi a4 1.8 1999 4
audi a4 2.0 2008 4
audi a4 2.0 2008 4
audi a4 2.8 1999 6
audi a4 2.8 1999 6

The mpg data set

A couple of useful variables:

  • displ: engine displacement, in liters

  • hwy: highway miles per gallon